JP2009231432A - Cooling device for heating element housing device, and heating element housing device using it - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cost-reduced cooling device for a heating element housing device. <P>SOLUTION: The cooling device for the heating element housing device comprises: a first blower fan 14 and a second blower fan 15 with a first DC voltage supplied from an external DC power supply 18; an electronic equipment cooling unit 7 equiped with a heat exchanger for heat-exchanging the air of a first environment and a second environment, and an input terminal 19 for supplying a second DC voltage to the second blower fan 14; an electric heater 23 with an AC voltage supplied from an external AC power supply 30; a power supply circuit 25 for converting the external AC power supply 30 to the DC voltage having the predetermined value to generate the second DC voltage; and a heating device 8 with an output terminal 31 for outputting the second DC voltage provided. The input terminal 19 and the output terminal 31 are connected to supply the second DC voltage to the second blower fan 15, blowing the air heated by the electric heater 23 into the second environment, which start-up-heats the electronic equipment by the cooling device for the heating element housing device. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a heat exchange device and a heating element storage device using the heat exchange device.

  For example, a communication device housed in a base station of a mobile phone consumes a current of several tens of amperes or more, and thus is expressed as a heating element in a certain point. In other words, cooling is extremely important in order to stabilize the operation. Such a mobile phone base station has the following configuration in order to cool it. In other words, this type of heating element storage device has a configuration including a cabinet that stores a communication device serving as a heating element, and a cooling device mounted in an opening of the cabinet.

  In addition, the communication device is also required to have an operating temperature of a certain value or higher in order to perform stable wireless communication with the mobile phone. In particular, when the outside air temperature decreases, the performance of the electronic components built into the transmitter / receiver inside the base station deteriorates, making it difficult to ensure stable communication. In the following, the cooling device will be described.

  For example, the cooling device has the following configuration in order to be attached to the wall surface of the heating element storage device. That is, a main body case having a first intake port and a first discharge port for outside air and a second intake port and a second discharge port for the inside of the cabinet housing the heating element, and an outside air provided in the main body case A first blower fan and a second blower fan for use in the cabinet, a heat exchanger that performs heat exchange between outdoor air and cabinet air in the main body case, and an electric heater unit that warms the air in the cabinet are provided. It was a composition.

  In addition, the first blower fan and the second blower fan use a DC brushless motor in order to reduce the size and increase the performance of the cooling device, and the power is supplied as a DC voltage from the AC / DC converter in the cabinet. , 24V or 48V was supplied.

  On the other hand, when the temperature in the cabinet falls below a predetermined value, the AC / DC converter stops the supply of DC power to stop the operation of the communication device in the base station.

  Therefore, the electric heater unit includes, for example, a PTC heater and an AC fan motor as a third blower fan, and operates by receiving power from a commercial AC power source supplied to the base station. .

And the technique which equips an electric heater and supplies commercial alternating current power supply and raises the temperature in a cabinet was described in patent document 1, patent document 2.
JP 2001-308572 A JP 2007-88126 A

  In such a cooling device for a heating element storage device, the AC / DC converter is stopped when the temperature inside the heating element storage device is lower than a predetermined temperature in order to ensure the stability of the operation of the communication device. In addition, the electric heater unit had to prepare a third blower fan.

  Therefore, it has been considered to use the second blower fan instead of the third blower fan. However, a power supply circuit that generates a DC voltage from a commercial AC power supply is provided in the electric heater unit, and a DC voltage that matches the output voltage of the AC / DC converter of the base station can be supplied to the second blower fan. Therefore, it is necessary to prepare two types of heater units for 24V and 48V, and there is a problem that the cost becomes high as a cooling device.

  The present invention solves such a conventional problem, and an object of the present invention is to provide a cooling device for a heating element storage device that reduces costs.

  In order to solve the above-mentioned problems, a cooling device for a heating element storage device and a heating element storage device using the same according to the present invention include a first blower fan to which a first DC voltage is supplied from an external DC power supply, and a second An electronic device cooling unit provided with a blower fan, a heat exchanger for exchanging heat between air in the first environment and the second environment, an input terminal for supplying a second DC voltage to the second blower fan, and an external AC An electric heater to which an AC voltage is supplied from a power source, a power supply circuit that converts the external AC power source into a DC voltage having a predetermined value to generate a second DC voltage, and an output terminal that outputs the second DC voltage are provided. Providing a heating device, connecting the input terminal and the output terminal, supplying the second DC voltage to the second blower fan, and blowing air warmed by the electric heater into a second environment; Start-up heating of electronic equipment is performed.

  By this means, the power supply circuit generates a predetermined DC voltage from the external AC power supply and supplies it to the electronic device cooling unit, so that a voltage matching the voltage of the external DC power supply can be supplied to the second blower fan. Therefore, it is possible to cope with a plurality of voltages only by preparing one model as a heating device, and as a result, it is possible to realize cost reduction and a cooling device for a heating element storage device and a heating element storage device using the same Is obtained.

  In addition, another means is a power supply circuit that switches between a transformer connected to an external AC power source and a full-wave rectification and a voltage doubler rectification provided on the secondary side of the transformer to perform rectification and convert an output voltage to a predetermined voltage. Is provided.

  By this means, the power supply circuit can supply a predetermined voltage to the electronic device cooling unit by switching the full-wave rectifier circuit and the voltage doubler circuit on the secondary side of the transformer to generate a DC voltage, It is possible to supply a voltage that matches the voltage of the DC power supply to the second blower fan, and it is possible to cope with multiple voltages by preparing only one model as a heating device, resulting in cost reduction. Thus, a cooling device for a heating element storage device and a heating element storage device using the same can be obtained.

  The other means switches the voltage to the first DC voltage provided with a power supply circuit in which the DC voltage when switching to full-wave rectification is 24V and the DC voltage when switching to voltage doubler rectification is 48V. It is characterized by this.

  By this means, the power supply circuit switches the full-wave rectifier circuit and the voltage doubler circuit on the secondary side of the transformer to generate the second DC voltage, so that the voltage matching the first DC voltage is supplied to the electronic device cooling unit. It is possible to supply the second blower fan with the first DC voltage, and it is possible to cope with a plurality of DC voltages of 24V and 48V just by preparing one model as a heating device, As a result, there can be obtained a cooling device for a heating element storage device that can realize cost reduction and a heating element storage device using the same.

  In another aspect, the electronic device cooling unit is provided with a control unit, which includes a first voltage detection unit that detects the first DC voltage, a temperature detection unit that detects the temperature of the second environment, A heating control unit that inputs signals from the first voltage detection unit and the temperature detection unit to determine whether the electric heater and the second blower fan are turned on and off, and a signal from the heating control unit is received to switch the power supply circuit. A first drive unit that performs the above, a second drive unit that drives the second blower fan, and a third drive unit that drives the electric heater.

  By this means, the first voltage detecting unit and the temperature detecting unit detect the first DC voltage and the temperature of the second environment, and the heating control unit drives the electric heater by the third driving unit. The second direct current voltage is adjusted to a predetermined voltage by the first and supplied to the second blower fan, and the second blower fan is driven by the second drive unit to heat the second environment, thereby heating the heating device. Can perform heating when the electronic device is started. In particular, the second driving fan can be driven by adjusting the second DC voltage to a predetermined voltage by the first driving unit and supplying the DC power from the heating device to the electronic device cooling device. It is possible to cope with the predetermined voltage only by preparing a device. As a result, there can be obtained a cooling device for a heating element storage device that can realize cost reduction and a heating element storage device using the same.

  As another means, the control unit includes a second voltage detection unit for determining the second DC voltage, and the first drive unit receives a signal from the second voltage detection unit and switches the power supply circuit. When the signal for encouraging the electric heater and the second blower fan to enter is received from the heating control unit, the output voltage of the rectifier circuit is controlled to be on the low side for a predetermined time.

  By this means, the second DC voltage is output at a lower voltage within a predetermined time, so that the second voltage detector determines the second DC voltage, and then the predetermined voltage is detected by the first drive unit. It is possible to prevent the supply of a voltage exceeding the allowable operating voltage to the second blower fan. And a heating device can respond to a plurality of external DC voltages only by preparing one model. As a result, it is possible to obtain a cooling device for a heating element storage device that can achieve cost reduction and a heating element storage device using the same.

  In another means, the second voltage detection unit measures the voltage supplied to the input terminal and drives the first drive unit.

  By this means, the second DC voltage is output at a lower voltage for a predetermined time, so that the second voltage detector measures the second DC voltage, and the first driver detects the second DC voltage. Can be switched to a predetermined voltage, and supply of a voltage exceeding the rated voltage to the second blower fan can be prevented. And a heating device can respond to a plurality of external DC voltages only by preparing one model. As a result, it is possible to obtain a cooling device for a heating element storage device that can achieve cost reduction and a heating element storage device using the same.

  Another means is that the second voltage detection unit measures the rotational speed of the second blower fan and drives the first drive unit.

  By this means, the second DC voltage is output at a lower voltage for a predetermined time, so that the second voltage detector measures the rotation speed of the second blower fan, and the first drive unit The second DC voltage can be determined and then switched to a predetermined voltage, and supply of a voltage exceeding the allowable operating voltage to the second blower fan can be prevented. And a heating device can respond to a plurality of external DC voltages only by preparing one model. As a result, it is possible to obtain a cooling device for a heating element storage device that can achieve cost reduction and a heating element storage device using the same.

  The other means is that the second voltage detector measures the current flowing to the second blower fan and drives the first drive unit.

  By this means, within a predetermined time, the second DC voltage is output at a lower voltage, so that the second voltage detector measures the current flowing to the second blower fan, and the first driver The second DC voltage can be determined and then switched to a predetermined voltage, and supply of a voltage exceeding the allowable operating voltage to the second blower fan can be prevented. And a heating device can respond to a plurality of external DC voltages only by preparing one model. As a result, it is possible to obtain a cooling device for a heating element storage device that can achieve cost reduction and a heating element storage device using the same.

  The other means is that the second voltage detection unit sets a changeover switch, and the first drive unit determines a predetermined voltage based on the setting of the changeover switch and switches the power supply circuit.

  By this means, the second voltage detection unit can switch and adjust the second voltage to a predetermined voltage in the first drive unit, and supply a voltage exceeding the allowable operating voltage to the second blower fan. Can be prevented. And a heating device can respond to a plurality of external DC voltages only by preparing one model. As a result, it is possible to obtain a cooling device for a heating element storage device that can achieve cost reduction and a heating element storage device using the same.

  Furthermore, by the above means, there is provided a cooling device for a heating element storage device that has an effect of ensuring the operating environment temperature of the communication device by raising the internal temperature even when the temperature inside the heating element storage device is low. A heating element storage device using the above is obtained.

  According to the cooling device for a heating element storage device of the present invention and the heating element storage device using the same, the first blower fan and the second blower fan to which the first DC voltage is supplied from the external DC power source, An AC voltage is supplied from an external AC power source, an electronic device cooling unit provided with a heat exchanger for exchanging heat between the environment and the air in the second environment, an input terminal for supplying a second DC voltage to the second blower fan An electric heater, a power supply circuit for generating a second DC voltage by converting the external AC power source into a DC voltage having a predetermined value, and a heating device provided with an output terminal for outputting the second DC voltage. The input terminal and the output terminal are connected to supply the second DC voltage to the second blower fan, and the air heated by the electric heater is blown into the second environment to start up the electronic device The power supply circuit is an external AC power supply. A second DC voltage of a predetermined voltage is generated and connected from the output terminal to the input terminal, whereby the second DC voltage is supplied from the heating device to the electronic device cooling unit, the second blower fan is driven, and the external AC The air heated by the electric heater connected to the power supply can be blown into the second environment to start up the electronic equipment, and it can handle multiple voltages just by preparing one model as a heating device. As a result, it is possible to provide a cooling device for a heating element storage device that can achieve cost reduction and a heating element storage device using the same.

  The invention described in claim 1 includes a first blower fan and a second blower fan to which a first DC voltage is supplied from an external DC power supply, and a heat exchanger for exchanging heat between air in the first environment and the second environment. An electronic device cooling unit provided with an input terminal for supplying a second DC voltage to the second blower fan, an electric heater supplied with an AC voltage from an external AC power source, and the external AC power source with a predetermined value A power supply circuit that converts the DC voltage into a second DC voltage and a heating device provided with an output terminal that outputs the second DC voltage are provided, the input terminal and the output terminal are connected, and the second A cooling device for a heating element storage device that supplies the second DC voltage to the blower fan, blows the air warmed by the electric heater into the second environment, and performs start-up heating of the electronic device. And generate a second DC voltage from the external AC power supply. By connecting the output terminal to the input terminal, the second DC voltage is supplied from the heating device to the electronic device cooling unit, and the air blown by the electric heater connected to the external power source is driven while driving the second blower fan. It has the effect | action which ventilates in a 2nd environment and performs starting heating of an electronic device.

  Further, the invention according to claim 2 rectifies by switching between a transformer connected to an external AC power source and full-wave rectification and voltage doubler rectification provided on the secondary side of the transformer, thereby setting the output voltage to a predetermined voltage. A cooling device for a heating element storage device provided with a power supply circuit for conversion, wherein the second DC voltage is adjusted to a predetermined voltage by switching between full-wave rectification and voltage doubler rectification, and is then transferred from the heating device to the electronic device cooling unit. It has the function of supplying a DC voltage.

  According to the third aspect of the present invention, the DC voltage when switching to full wave rectification is set to 24V, and the DC voltage when switching to double voltage rectification is set to 48V. A cooling device for a heating element storage device characterized by switching to a voltage, and has an effect of supplying a voltage switched to either full-wave rectification or voltage doubler rectification from a heating device to an electronic device cooling unit.

  According to a fourth aspect of the present invention, a control unit is provided in the electronic device cooling unit, and the control unit includes a first voltage detection unit that detects the first DC voltage and a temperature detection unit that detects the temperature of the second environment. And a heating control unit that inputs signals from the first voltage detection unit and the temperature detection unit to determine whether the electric heater and the second blower fan are driven or not, and receives the signals from the heating control unit and rectifies A cooling device for a heating element storage device having a first drive unit that switches circuits, a second drive unit that drives a second blower fan, and a third drive unit that drives an electric heater, the first voltage The detection unit and the temperature detection unit detect the first DC voltage and the temperature of the second environment, and the heating control unit drives the electric heater by the third drive unit, and the second drive unit supplies the second DC voltage by the first drive unit. The voltage is adjusted to be supplied to the second fan and the second It has the effect of heating of the second environment to drive the second blowing fan by moving parts.

  According to a fifth aspect of the present invention, the control unit includes a second voltage detection unit that determines the second DC voltage, and the first drive unit receives the signal from the second voltage detection unit and switches the rectifier circuit. And when the signal for energizing the electric heater and the second blower fan is received from the heating control unit, the output voltage of the rectifier circuit is controlled to be low for a predetermined time. Item 4. The cooling device for a heating element storage device according to Item 4, wherein the rectifier circuit outputs the second DC voltage at a lower voltage within a predetermined time, the second blower fan is driven, and then the second It is switched to a predetermined voltage by the signal of the voltage detection unit and has an effect.

  According to a sixth aspect of the present invention, the second voltage detection unit measures the voltage supplied to the input terminal and drives the first drive unit, and the second voltage detection unit is a cooling device for a heating element storage device. The detection unit measures and determines the voltage of the input terminal, thereby switching the first drive unit and adjusting the voltage to a predetermined voltage.

  The invention according to claim 7 is the cooling device for a heating element storage device, wherein the second voltage detection unit measures the rotation speed of the second blower fan and drives the first drive unit, A voltage detection part has the effect | action which switches and adjusts a 1st drive part to a predetermined voltage by measuring and discriminating the rotation speed of a 2nd ventilation fan.

  The invention according to claim 8 is the cooling device for a heating element storage device, wherein the second voltage detection unit measures the current flowing to the second blower fan and drives the first drive unit. A voltage detection part has the effect | action which switches and adjusts a 1st drive part to a predetermined voltage by measuring and discriminating the electric current which flows into a 2nd ventilation fan.

  According to a ninth aspect of the present invention, the second voltage detection unit sets the changeover switch, and the first drive unit determines the predetermined voltage according to the setting of the changeover switch and switches the power supply circuit. The device has a function of adjusting the second voltage for switching the first drive unit to a predetermined voltage according to the setting of the changeover switch.

  The invention according to claim 10 is a heating element storage device using the cooling device for heating element storage device according to any one of claims 1 to 9, wherein the cooling device for the heating element storage device is the second one. When the temperature in the heating element storage device, which is the environment, is low, the second ambient temperature can be raised by receiving power from an external AC power source and driving the second blower fan and the electric heater. And it has the effect | action which starts operation | movement of a communication apparatus.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
In FIG. 1, 1 indicates a building, and a rooftop 2 is provided with a mobile phone base station 3 as a heating element storage device. The base station 3 includes a box-shaped cabinet 4, a communication device 5 provided in the cabinet 4, and a heating element storage device cooling device 6 provided at the front opening of the cabinet 4 so as to be opened and closed like a door. Yes.

  As shown in FIGS. 2 to 4, the heating element storage device cooling device 6 includes an electronic device cooling unit 7 and a heating device 8, and the electronic device cooling unit 7 is a first unit for outside air (first environment). A main body case 13 having a first intake port 9 and a first discharge port 10, and a second intake port 11 and a second discharge port 12 for the inside of the cabinet 4 (second environment), and outside air provided in the main body case 13 The first blower fan 14 for (first environment), the second blower fan 15 for inside the cabinet 4 (second environment), the outside air (first environment) in the main body case 13, and the inside of the cabinet 4 And a heat exchanger 16 that performs heat exchange with air in the (second environment).

  Although not shown and described, the heat exchanger 16 is configured as follows as a general structure. On the surface of the first plate body, the second plate body, and the third plate body on the surface of the second plate body is formed in a substantially rectangular parallelepiped by polymerizing each with a predetermined interval, The surface of the first plate body on the second plate body side includes a plurality of first rectifying walls that partition the surface of the first plate body in a lane shape, and the third plate body side of the second plate body. A plurality of second rectifying walls that divide the surface of the second plate body in a lane shape are provided on the surface, and are arranged in the central portion of the main body case 13.

  The main body case 13 is provided with a first air intake port 9 and a second air intake port 11 on the front surface and the back surface so as to separate the outside air and the inside of the cabinet 4 in the thickness direction. The second blower fan 15 is arranged with the suction ports opposed to these intake ports.

  The electronic device cooling unit 7 is connected to an external DC power supply 18 supplied from an AC / DC converter 17 provided in the cabinet 4 which is the base station 3 of the mobile phone, and the first DC voltage V1 from the external DC power supply 18 is connected. Are supplied to a first blower fan 14 and a second blower fan 15 which are respectively constituted by a DC brushless motor and a centrifugal fan.

  An input terminal 19 for supplying a second DC voltage V2 to the second blower fan 15 is provided.

  Furthermore, the electronic device cooling unit 7 is provided with a control unit 20. The control unit 20 is connected to the first voltage detection unit 21 that detects the first DC voltage V1, the temperature detection unit 22 that detects the temperature of the second environment, and the first voltage detection unit 21 and the temperature detection unit 22. In response to these signals, it is determined whether the air in the cabinet 4 needs to be heated “Yes” or “No”, that is, whether the electric heater 23 (described later) and the second blower fan 15 are driven “ON” or “OFF”. A heating control unit 24 that performs switching, a first driving unit 26 that switches a power supply circuit 25 (described later) in response to a signal from the heating control unit 24, and a second driving unit 27 that drives the second blower fan 15 A third drive unit 28 that drives the heater 23 is provided.

  Further, the control unit 20 includes a second voltage detection unit 29 that measures and discriminates the second DC voltage V2, and the first drive unit 26 receives a signal from the second voltage detection unit 29 and receives the signal from the power supply circuit 25. In addition to switching, when receiving a signal prompting “ON” of the electric heater 23 and the second blower fan 15 from the heating control unit 24, the output voltage of the power supply circuit 25 is set to the low side for a predetermined time. To do.

  The heating device 8 is disposed in a part of the air path communicating with the second intake port 11, the heat exchanger 16, the second blower fan 15, and the second discharge port 12.

  The heating device 8 includes an electric heater 23 using a PTC heater, a sheathed heater or a carbon heater to which an AC voltage is supplied from an external AC power supply 30 which is a commercial power supply supplied to the cabinet 4, and the external AC power supply 30. A power supply circuit 25 that generates a second DC voltage V2 by converting the DC voltage to a predetermined value and an output terminal 31 that outputs the second DC voltage V2 are provided. The second DC voltage V2 is supplied from the heating device 8 side to the electronic device cooling unit 7 side via the input terminal 19 and the output terminal 31. That is, the input terminal 19 and the output terminal 31 may be provided as separate terminals and connected by a connector, but may be configured as a single connection point. In any case, they are included in the input terminal 19 and the output terminal 31 of the present invention.

  Further, the heating device 8 includes a transformer 32 connected to the external AC power source 30 and a switchable power supply circuit 25, that is, a full-wave rectifier circuit and a voltage doubler rectifier circuit are switched to the secondary side of the transformer 32 to rectify. And a power supply circuit 25 for converting the output voltage into a predetermined voltage. The DC voltage when switched to the full-wave rectifier circuit is 24V, and the DC voltage when switched to the voltage doubler rectifier circuit is 48V.

  With the above configuration, normally, when the temperature in the cabinet 4 is higher than a predetermined temperature, the communication device 5 can operate stably, and therefore, the DC voltage is supplied from the AC / DC converter 17 to operate the communication device 5. The first blower fan 14 and the second blower fan 15 are also supplied with the DC voltage, suck in the air in the first environment, which is the outside air, from the first intake port 9 and pass it through the heat exchanger 16 to pass through the first discharge. Blowing out again from the outlet 10 to the first environment, sucking air in the cabinet 4 from the second intake port 11, passing through the heat exchanger 16 and blowing out from the second discharge port 12 into the cabinet 4, The heat of the air in the cabinet 4 is discharged.

  On the other hand, when the base station is operated for the first time at a low outside air temperature, for example, below freezing temperature, the temperature in the cabinet 4 is lower than a predetermined temperature, and the communication device 5 cannot operate stably. No DC voltage is supplied, and only the external AC power supply 30 is supplied.

  At this time, since only the external AC power supply 30 is supplied, the power supply circuit 25 generates a DC voltage from the transformer 32, and the power supply circuit 25 is set to a full-wave rectifier circuit to operate the control circuit. Become.

  Then, in the heating control unit 24, the first voltage detection unit 21 and the temperature detection unit 22 detect the first DC voltage V1 and the temperature of the second environment, and the third drive unit 28 drives the electric heater 23, The second DC voltage V2 is supplied as it is by the first drive unit 26, and the second blower fan 15 is driven by the second drive unit 27 to start heating the second environment.

  That is, as shown in the flowchart of FIG. 5, the heating control unit 24 determines that the first voltage detection unit 21 and the temperature detection unit 22 detect the first DC voltage V1 and the temperature in the cabinet 4 in steps 1 and 2, respectively. The second DC voltage V2 supplied from the output terminal 31 to the input terminal 19 is supplied to the second blower fan 15.

  Then, as shown in the flowchart of FIG. 6, the first drive unit 26 measures the second DC voltage V2 when the predetermined time in Step 4 has elapsed, and the second voltage detection unit 29 measures the same as in Step 5. The voltage value is discriminated based on the measured voltage value. When this voltage value is higher than the preset voltage value, it is determined that a predetermined voltage is supplied, and the method of the rectifier circuit included in the power supply circuit 25 is not switched as in step 6. That is, a DC voltage is supplied in the state of a full-wave rectifier circuit, and 24V is supplied.

  If the voltage value is lower than the preset voltage value, it is determined that the predetermined voltage is not supplied, and the power supply circuit 25 is changed from the full-wave rectifier circuit to the voltage doubler rectifier circuit as in step 7. And 48V is output.

  Here, the voltage value set in advance is, for example, based on a voltage value set a few volts lower than the rated value of the first DC voltage V1. Since it is on the low side of the wave rectifier circuit, that is, the output voltage, 24V is output and the second voltage detector 29 directly measures the second DC voltage, so that it can be easily set and compared with the voltage value. Can be switched to a predetermined DC voltage.

  Then, the heating device 8 supplies, as the second DC voltage V2, a DC voltage corresponding to the first DC voltage V1 from the output terminal 31 to the electronic device cooling unit 7 through the input terminal 19, and the second blower fan 15 is supplied. It is driven at a predetermined voltage to circulate the air in the cabinet 4 and heats the air with the electric heater 23 to warm the temperature in the cabinet 4.

  That is, the heating device 8 is supplied with the external AC power supply 30, and the power supply circuit 25 switches the full-wave rectifier circuit and the voltage doubler rectifier circuit to adjust the external AC power supply 30 to a predetermined DC voltage V2. And the second DC voltage V2 can be supplied from the heating device 8 to the electronic device cooling unit 7 by driving the second blower fan 15 and externally. The air heated by the electric heater 23 connected to the AC power source 30 is blown into the second environment to warm the air in the cabinet 4, and the transmitter / receiver 5 on which a large number of electronic components are mounted. Start-up heating that enables start-up is performed.

  The power supply circuit 25 can supply a predetermined voltage to the electronic device cooling unit 7 by switching the full-wave rectifier circuit and the voltage doubler circuit on the secondary side of the transformer 32 to generate a DC voltage. It becomes possible to supply the voltage matching the voltage of the external DC power supply 18 to the second blower fan 15. In particular, the transformation ratio of the transformer 32 is adjusted so that either the output voltage when switched to the full-wave rectifier circuit or the output voltage when switched to the voltage doubler rectifier circuit is 24V or 48V. Thus, it is possible to easily cope with the other DC voltage, and it is possible to realize an inexpensive heating device 8.

  As a result, it is possible to provide a cooling device for a heating element storage device that can cope with a plurality of voltages by preparing only one model of the heating device 8 and realizes cost reduction.

  Further, within a predetermined time, the power supply circuit 25 outputs the second DC voltage as a lower voltage, the second blower fan 15 is driven, and thereafter, the signal is supplied to the predetermined voltage by the signal of the second voltage detection unit 29. During the predetermined time, the second DC voltage V2 is output as a lower voltage, so that the second voltage detector 29 measures the second DC voltage V2, and the first driver 26 The DC voltage V2 can be discriminated and then switched to a predetermined voltage, and supply of a voltage exceeding the allowable operating voltage to the second blower fan 15 can be prevented.

  The predetermined time may be a time until the second voltage detection unit 29 realizes a state in which the second DC voltage V2 can be measured, and particularly when the voltage is measured as in the present embodiment, The same effect can be obtained without providing a predetermined time. In this case, a predetermined DC voltage can be quickly supplied to the second blower fan 15, and the inside of the cabinet 4 can also be warmed up quickly.

  As described above, the cooling device 6 for the heating element storage device receives power from the external AC power supply 30 when the temperature in the heating element storage device, which is the second environment, is low. The second environmental temperature can be raised by driving the heater 23. Then, the operation of the communication device 5 can be started.

  That is, even when the temperature inside the heating element storage device is low, the operating temperature of the communication device 5 can be secured by increasing the internal temperature. In particular, the heating device 8 can cope with a plurality of voltages by preparing only one model, and as a result, provides a cooling device for a heating element storage device and a heating element storage device using the same. can do.

(Embodiment 2)
In the present embodiment, the second voltage detection unit 33 (not shown) measures the number of rotations of the second blower fan 15 with respect to the number of rotations set in advance. The first drive unit 34 for determining the second DC voltage V2 is configured. Other parts are denoted by the same reference numerals, and detailed description thereof is omitted.

  With the above configuration, the first drive unit 34 measures the second DC voltage V2 when the predetermined time in Step 8 has elapsed as shown in the flowchart of FIG. 7, and the second voltage detection unit 33 as in Step 9. The voltage value is discriminated based on the rotation speed of the second blower fan 15 measured. When this rotational speed is higher than the preset rotational speed, it is determined that a predetermined voltage is supplied, and the method of the rectifier circuit is not switched as in step 10. That is, a DC voltage is supplied in the state of a full-wave rectifier circuit, and 24V is supplied.

  If the rotation speed is lower than the preset rotation speed, it is determined that a predetermined voltage is not supplied, and the rectifier circuit is changed from a full-wave rectifier circuit to a voltage doubler rectifier circuit as in step 11. 48V is output after switching.

  Here, the rotation speed set in advance is, for example, based on the rotation speed when the voltage is set lower by several V than the rated value of the first DC voltage V1, and the initial setting of the rectifier circuit is Since the full-wave rectifier circuit is on the low output voltage side, 24V is output and the second blower fan 15 has a rotation speed corresponding to this voltage, and is compared with a preset rotation speed. It can be easily switched to a predetermined DC voltage.

  Then, the heating device 8 supplies, as the second DC voltage V2, a DC voltage corresponding to the first DC voltage V1 from the output terminal 31 to the electronic device cooling unit 7 through the input terminal 19, and the second blower fan 15 is supplied. It is driven at a predetermined voltage to circulate the air in the cabinet 4 and heats the air with the electric heater 23 to warm the temperature in the cabinet 4.

  Within a predetermined time, the second DC voltage V2 is output as a lower voltage so that the second voltage detector 33 measures the rotational speed of the second blower fan 15, and the first driver 34 The second DC voltage V <b> 2 can be determined and then switched to a predetermined voltage, and supply of a voltage exceeding the allowable operating voltage to the second blower fan 15 can be prevented. And the heating apparatus 8 can respond | correspond to a some external DC voltage only by preparing one model. As a result, it is possible to provide a cooling device for a heating element storage device that realizes cost reduction.

(Embodiment 3)
In the present embodiment, the second voltage detection unit 35 (not shown) measures the current value of the second blower fan 15 based on the preset current value as compared to the first embodiment. The first drive unit 36 for determining the second DC voltage V2 is provided. Other parts are denoted by the same reference numerals, and detailed description thereof is omitted.

  With the above configuration, the first drive unit 36 measures the second DC voltage V2 when the predetermined time of step 12 elapses as shown in the flowchart of FIG. 8, and the second voltage detection unit 35 as shown in step 9. The voltage value is determined based on the current value of the second blower fan 15 measured. If the current value is higher than the preset current value, it is determined that a predetermined voltage is supplied, and the method of the rectifier circuit is not switched as in step 10. That is, a DC voltage is supplied in the state of a full-wave rectifier circuit, and 24V is supplied.

  If the current value is lower than the preset current value, it is determined that the predetermined voltage is not supplied, and the rectifier circuit is changed from the full-wave rectifier circuit to the voltage doubler rectifier circuit as in step 11. 48V is output after switching.

  Here, the current value set in advance is, for example, based on the current value when the voltage is set a few volts lower than the rated value of the first DC voltage V1. Since the full-wave rectifier circuit, that is, on the low output voltage side, 24V is output, and the second blower fan 15 has a current value corresponding to this voltage, and is compared with a preset current value. It can be easily switched to a predetermined DC voltage.

  Then, the heating device 8 supplies, as the second DC voltage V2, a DC voltage corresponding to the first DC voltage V1 from the output terminal 31 to the electronic device cooling unit 7 through the input terminal 19, and the second blower fan 15 is supplied. It is driven at a predetermined voltage to circulate the air in the cabinet 4 and heats the air with the electric heater 23 to warm the temperature in the cabinet 4.

  Within a predetermined time, the second DC voltage V2 is output at a lower voltage, so that the second voltage detector 35 measures the current value of the second blower fan 15, and the first driver 36 The second DC voltage V <b> 2 can be determined and then switched to a predetermined voltage, and supply of a voltage exceeding the allowable operating voltage to the second blower fan 15 can be prevented. And the heating apparatus 8 can respond | correspond to a some external DC voltage only by preparing one model. As a result, it is possible to provide a cooling device for a heating element storage device that realizes cost reduction.

(Embodiment 4)
The present embodiment is different from the first embodiment in that the second voltage detector 37 (not shown) sets the setting for specifying the first DC voltage in advance by the switch input of the changeover switch 39 (not shown). The first drive unit 38 is configured to switch the rectification method of the power supply circuit based on the setting of the changeover switch 39. Other parts are denoted by the same reference numerals, and detailed description thereof is omitted.

  With the above configuration, the second voltage detector 37 sends a signal corresponding to the setting of the selector switch 39 to the first driver 38 as shown in the flowchart of FIG. 9, and the first driver 38 switches the power supply circuit. The second DC voltage is adjusted to a predetermined voltage.

  The second voltage detection unit 37 can adjust the second DC voltage V2 to a predetermined voltage by the first driving unit 38, and prevents the second blower fan 15 from being supplied with a voltage exceeding the allowable operating voltage. it can. And the heating apparatus 8 can respond | correspond to a some external DC voltage only by preparing one model. As a result, it is possible to provide a cooling device for a heating element storage device that realizes cost reduction.

  It is extremely useful as a cooling facility for communication equipment base stations and other outdoor equipment.

The figure which shows the installation state of the heat generating body accommodating apparatus of Embodiment 1 of this invention. The figure which shows the structure of the heat generating body accommodating apparatus of the same Embodiment 1. The figure which shows the structure of the cooling device for heat generating body accommodating apparatuses of the same Embodiment 1. FIG. The block diagram which shows the structure of the heating apparatus of Embodiment 1 The flowchart which shows operation | movement of the heating control part of the same Embodiment 1. The flowchart which shows operation | movement of the 1st drive part of the Embodiment 1. The flowchart which shows operation | movement of the 1st drive part of the Embodiment 2. The flowchart which shows operation | movement of the 1st drive part of the same Embodiment 3. The flowchart which shows operation | movement of the 1st drive part of the same Embodiment 4.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Building 2 Rooftop 3 Mobile phone base station 4 Cabinet 5 Communication device 6 Heating device storage device cooling device 7 Electronic device cooling unit 8 Heating device 13 Body case 15 Second blower fan 17 AC / DC converter 18 External DC power supply DESCRIPTION OF SYMBOLS 19 Input terminal 20 Control part 21 1st voltage detection part 22 Temperature detection part 23 Electric heater 24 Heating control part 25 Power supply circuit 26 1st drive part 27 2nd drive part 28 3rd drive part 29 2nd voltage detection part 30 External alternating current Power supply 31 Output terminal 32 Transformer 33 Second voltage detection unit 34 First drive unit 35 Second voltage detection unit 36 First drive unit 37 Second voltage detection unit 38 First drive unit 39 Changeover switch

Claims (10)

To a first blower fan and a second blower fan to which a first DC voltage is supplied from an external DC power source, a heat exchanger for exchanging heat between air in the first environment and the second environment, and the second blower fan An electronic device cooling unit provided with an input terminal for supplying a second DC voltage, an electric heater to which an AC voltage is supplied from an external AC power source, and converting the external AC power source into a DC voltage having a predetermined value, A power supply circuit for generating a DC voltage and a heating device provided with an output terminal for outputting the second DC voltage are provided, and the second DC fan is connected to the second blower fan by connecting the input terminal and the output terminal. A cooling device for a heating element storage device that supplies voltage and blows air warmed by the electric heater into a second environment to start and heat the electronic device. 2. A transformer connected to an external AC power source, and a power circuit for converting the output voltage into a predetermined voltage by switching between full-wave rectification and voltage doubler rectification provided on the secondary side of the transformer and converting the output voltage to a predetermined voltage. A cooling device for a heating element storage device. The DC voltage when switching to full-wave rectification is set to 24V, and the DC voltage when switching to double voltage rectification is set to 48V. 3. The cooling device for a heating element storage device according to 2. A control unit is provided in the electronic device cooling unit. The control unit includes a first voltage detection unit that detects the first DC voltage, a temperature detection unit that detects the temperature of the second environment, and the first voltage detection unit and the temperature. A heating control unit that inputs a signal from the detection unit and determines whether the electric heater and the second blower fan are driven or not, and a first driving unit that receives a signal from the heating control unit and switches the power supply circuit. The cooling device for a heating element storage device according to claim 1, further comprising a second driving unit that drives the second blower fan and a third driving unit that drives the electric heater. The control unit includes a second voltage detection unit that determines the second DC voltage, and the first drive unit receives a signal from the second voltage detection unit to switch the power supply circuit, and from the heating control unit to the electric heater. 5. The cooling for a heating element storage device according to claim 4, wherein when the signal for prompting the second blower fan to enter is received, the output voltage of the rectifier circuit is controlled to be low for a predetermined time. apparatus. 6. The cooling device for a heating element storage device according to claim 5, wherein the second voltage detection unit measures the voltage supplied to the input terminal and drives the first drive unit. 6. The cooling device for a heating element storage device according to claim 5, wherein the second voltage detection unit measures the rotation speed of the second blower fan and drives the first drive unit. 6. The cooling device for a heating element storage device according to claim 5, wherein the second voltage detection unit measures the current flowing to the second blower fan and drives the first drive unit. 5. The cooling device for a heating element storage device according to claim 4, wherein the second voltage detection unit sets a changeover switch, and the first drive unit determines a predetermined voltage based on the setting of the changeover switch and switches a power supply circuit. A heating element storage device using the cooling device for a heating element storage device according to claim 1.

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